# CVE-2026-31844: Authenticated SQL Injection in Koha displayby parameter of suggestion.pl

> Authenticated attackers can exploit SQL injection in Koha's suggestion interface to read or modify backend database data.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Mar 2026
- **Updated:** 10 Aug 2026
- **Also known as:** GHSA-x6wm-w6mm-jpf2

## What is CVE-2026-31844?

CVE-2026-31844 is a high-severity SQL injection vulnerability in Koha, published on 11 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

An authenticated SQL Injection vulnerability (CWE-89) exists in the Koha staff interface in the /cgi-bin/koha/suggestion/suggestion.pl endpoint due to improper validation of the displayby parameter used by the GetDistinctValues functionality. Successful exploitation may lead to full compromise of the backend database, including disclosure or modification of stored data.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2026-31844?

It affects 1 product.


Products: Koha Koha.

## How do I fix CVE-2026-31844?

No fix has been published for CVE-2026-31844 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-31844 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-31844 exists.

Public exploit code:

- https://github.com/Mothra-1/CVE-2026-31844 (github_poc): https://github.com/Mothra-1/CVE-2026-31844

## Other vulnerabilities in Koha

- [CVE-2014-1924](https://insights.sbomify.com/CVE-2014-1924/): SQL injection in n/a (critical 9.8)
- [CVE-2014-1925](https://insights.sbomify.com/CVE-2014-1925/): SQL injection in n/a (critical 9.8)
- [CVE-2015-4633](https://insights.sbomify.com/CVE-2015-4633/): SQL injection in n/a (critical 9.8)
- [CVE-2024-28739](https://insights.sbomify.com/CVE-2024-28739/): Command injection in n/a (critical 9.6)
- [CVE-2024-24337](https://insights.sbomify.com/CVE-2024-24337/): Code injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-31844 and fix it if it is affected.

What it is: CVE-2026-31844 is a high-severity SQL injection vulnerability in Koha, published on 11 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-31844 exists.

Affected product: Koha. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-31844/ (Markdown: https://insights.sbomify.com/CVE-2026-31844/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-31844
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-31844
- OSV: https://osv.dev/vulnerability/CVE-2026-31844

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-31844/
Summaries are generated and may contain mistakes; the official description above is the record.